I'm surprised this was not included in Skyrim since you could possibly cover more ground and reach wider gaps. This or some sort of levitation spell would be a nice addition in a future patch considering there are no acrobatic attributes and plenty of mountainous terrain to traverse.

It would be completely unrealistic, even for the TES universe.

Well they could give you more options with the telekenisis spell, not to make you fly but to control objects you can stand on, such as a light platform, you could stand in it and guide yourself gh the air, but only in certain locations as flying though skyrimwould be a bit too unrealistic.

The ability to jump while sprinting is unrealistic?

I can do it in real life so I don't see how it's unrealistic?